Samples of SCP-1600-1 are stored in the Hazardous Materials Wing of Site 37, within a chamber constructed from a brass alloy with 42% zinc content. All personnel interacting with SCP-1600-1 must wear a suitable level C hazmat suit to prevent accidental exposure.

The hazmat suit will get turned to cheese. You should at least have them have ones covered with zinc foil.

Chemical analysis have shown it to be a compound of sulfur, mercury and several unidentified elements. Foundation currently possesses 53 liters of SCP-1600-1.

I'd make it an organic compound and expunge the composition. The above sort of thing is just asking for trouble.

Also this one…. I can imagine some of the things MC&D might have done with this, but I feel like it needs to be expanded on.

As an aside, I wonder if this thing will be used as a part of containment procedures of something else once, since it can clearly neutralise samples of certain other SCPs.

If I am understanding correctly how hazmat suits work, they are made from various materials depending on circumstances in which they are used. In "suitable level C hazmat suit", level C refers to the fact that no respiratory protection is required, and suitable indicates that they should wear the suit that protects from SCP-1600 and not from, say, acid.

I don't see how the composition could be a problem, but if more people would complain about it, I'll change it.

I think that letting people speculate about what MC&D used this for works better than me just stating something specific.

The same thing, basically. The cheese will deform, but only slightly, as it has the same density as, well, cheese, and the resulting SCP-1600-2 sample would taste like cheese. So, nothing as fun as with human serum.